AIRCARE - Executive 4DTS-900

Had this exact situation, bought a ultrasonic in for a small room and all others were evaporative. We have hard water. I have a very good Airthings monitor, which had been showing perfect PM 2.5 with all humidifiers running. From the day the ultrasonic humidifier was on, PM 2.5 went off the charts well away from the room itself. Took 1.5mos to figure it out. It was driving me crazy. The minute I turned it off, dropped precipitously back to 0 from 100+. Insane. Also, it was impacting the combustion of our natural gas stove - yellow flame. Back to blue now without a blip. I threw that sucker out and bought a couple monster capacity air cares and a steam one to replace in the small room. Zero issues. I was completely shocked how fast and how far those particles traveled, via hvac.

There are a few high end brands that might be superior, but most are very similar, within their categories. No BIFL humidifiers, and better ones will be costly. For longevity, evaporative seems to be the best type. I suggest you narrow it down to what will work for you and check reviews online. I wanted to add one lower priced gallon size evaporative model for my kitchen area and concluded they all suck and don't last too long. I'm guessing you're looking for a room size, vs whole house. First consider the type: warm mist, ultrasonic, evaporative. Warm mist will cost the most to operate. Ultrasonic often leaves a white dust on surfaces. Evaporative can be noisy due to the fan. Ease of use is key - filling and cleaning, lugging to sink, capacity. Every stinking plastic contraption that deals with air has a ridiculous amount of nooks, crannies, and fins that can be impossible to clean. Check consumables for cost of replacement wicks, filters. I use two whole house evaporative humidifiers along with water additives to inhibit bacteria. One is twenty years old, a Bemis hamper style, now AirCare. In winter they run 24/7 along with woodstoves. Wicks need cleaning or replacing monthly, $25 each. Some can hold up to a vinegar soak to give it another month.

my dumb whole house humidifier is on all the time. to make it smart, this video helped [AIRCARE Large Evaporative Whole House Humidifier is good. but here's how to make it great!](https://www.youtube.com/watch?v=5Qp7Ak0-T2M) basically, a smart plug to monitor energy. if power is low, the unit stopped, time to fill it with more water.

I used to love our evaporative humidifier by Aircare. It's just a bin of cold water, a filter to wick up the water, and a fan to pull the moisture out and blow it into the room. The fan has a nice drone to it to create a white noise effect.

They are, but I have had two running for multiple years between them. I had a large Air Care - i’m not sure why - but the fan mechanism leaked all of its lubricant and corroded badly. I assume user error haha. But even it lasted 3 years! Now I have my ~5yo Air Care running in our upstairs, and we got a new Vissani 6 gal this past year.

I’ve had the best luck with evaporative humidifiers for big rooms. Ultrasonics are quiet, but most just can’t keep up in a large living room. If you want something that actually moves the needle: AirCare / Essick evaporative models not pretty, but they work. Can handle large spaces, no white dust, and the fan noise is more like steady white noise (no gurgling). Downside: big footprint. Venta LW series (used or on sale) very quiet and dead simple to clean, great overnight. Expensive new, but worth it if noise + maintenance matter more than max output. Levoit LV600S solid if you really want ultrasonic; quiet and convenient, but you’ll refill more often and it may struggle if the room is truly large.